Power-transmission universal joint.



H. R; SHAW.

' POWER TRANSMISSION UNIVERSAL JOINT.

APPLIOATION FILED DEO.1 3,1907.

I Patented Sept. 29, 1908.

- IN /9701:. r

detail HUGH ROBERTSON SHAWQOF ROSSEAU; ONTARIO, CANADA.

- POWER-TRANSMISSION UNIVERSAL JOINT.

Specification of Letters Patent.

Application'filed December 13, 1907. Serial No.

To all whom it may concern:

Be it known that I, HUGH ROBERTSON SHAW, of the village of Rosseamin the-district of Parry Sound, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Power-Transmission Universal Joints, of which the following is the specification.

My invention relates to improvements in power transmission universal oints, and the object of the invention to devise a simple, cheap, strong, durable, efi'ective and noiseless'running universal joint or con ling by which power may be transmitted rom one member of the jo nt to the other without any lost motion or slip.

A further object is to so construct the universal joint that a meat of angle than as heretofore been possible may be efl'ected and with buta minimum amountof friction.

To efiect these objects I have constructed my joint or coupling either in double or single form, the sockets being provided with internal recesses or grooves and-the balls fitting therein with segments of rings, which are secured on the bal s and work in the recesses or grooves as the joint rotates, the

balls being retained inposition i-n the sockets and the parts beingotherwise constructed and arranged as hereinafter more particue larly explained.

Figure 1, is 'a my improved power transmission universa joint in double form. Fig. 2, is a similar view to Fig. 1, the socket being, however, partly in section. Fig. 3, is ajlongitudinal section through the socket shdwn 1n Fi s.v 1 and 2 also showing one of the balls and the segments thereofin section. Fig. 4 is an end view of the joint. 5, is across section on the line 02-3 Fig. 3. Fig. 6, is a showing a joint in single form. A A

In the drawings like letters of reference indicate corresponding parts in each fi re.

A A is the double socket connectedby a hollow shank A. The double socket A A and shank A are made in two halves, the

1 division being in a plane passing through the axis of the shank. One socket A is provided with an arc-shaped recess or roove A and the opposite socket A, is provided with an arc-shaped groove or recess A, which is preferably at right angles tofitheegroove A ach socket is preferablv made i internally,

so as to receive a spherical ball B,.the size eater range of adjustsocket A receiving :a shaft perspective view showing.

tion 0 hemisphere of the ba 1. The outer end of C, and the two parts of the socket are secured to ether at the ends by the internally threadef ring D fitting on to the reduced cylindrical outer portions D of the-socket.

The balls B B are each rovided with the usual stems B B and suc stems may form part of the ball or part of a shaft and extend into the ball. As indicated in Fig. 6 the socket may be formed in the 'end of the stem in which the end of the shaft is secured. Instead of the shaft being secured to the balls a driving gear may be secured or other power transmission device.

Each ball B has secured to it a segment of a ring E by a pin F passing diametrically through the ball and the segment near the ends. As will be seen from the drawings the ring extends over more than one-half of ,the circumference of the ball. The seg-. ments E fit in the ooves A -and A, one segment on one ball ing preferably at right angles to the longitudinal plane of the segment of the opposite ball.

In Fig. 6, I, show a modification in which there isone socket A and ball A, the shaft A being connected to a supplemental socket A formed at the outer end of the socket A. .The ball A has a stem A having a A, which is suitably secured in the same. The shaft A is journaled in bearings G. In the forms shown the segment is shown on the ball and the groove in the socket and the ,two halves of the double socket are shown connected together by end rings.

Inpract-ice I find that shafts connected by my joint may be driven at anything from a straifght line with each other and to a posi-' 135 approximate] as shown in'Fig. 6in the single form an to a position at right angles to each other as-shown in the double form or even less. I have driven them" at an' angle of 70 in relation to each other, the flaring mouth C permitting of this adjustability. Such a universal oint or coupling as I describe is also adaptable for very high speeds, which is an important desideratum. v

What I claim as my invention is:

1. A power transmission joint or coupling comprising a ball member, asegment. of a rin secured on the ball member and exten ing over more than one-half of the cir- Patented Sept. 29, 1908.

of the socket being sli htly greater than the cumference of the same, and a socket memher having the interior thereof in excess of a hemisphere and provided with an arcshaped groove located on a plane through the-axis of rotation and extending from edge to edge of said socket member so as to form a continuous bearing surface for the segment on the ball from end to end as it adjusts itself in the groove during rotation as specified.

2. power transmission joint or coupling comprising a ball member, a segment of a rin pivoted on the ball member and exten mg over more than one-half of the cir- 

